Owner's Manual

MS 461
English
54
EPA / CEPA
The Emission Compliance Period
referred to on the Emissions
Compliance Label indicates the number
of operating hours for which the engine
has been shown to meet Federal
emission requirements.
Category
Engine
STIHL single cylinder two-stroke engine
Ignition system
Electronic magneto ignition
Fuel system
All position diaphragm carburettor with
integral fuel pump
Chain lubrication
Fully automatic, speed-controlled oil
pump with reciprocating piston-
additional manual oil flow control
Weight
dry, without bar and chain
Cutting attachment MS 461
Recommended cutting attachments in
compliance with Sec. 5.11 of ANSI
standard B 175.1-2000
Observe the information about ANSI
standard B 175.1-2000 as well as the
definition "low-kickback saw chain" in
the section "Safety Precautions and
Working Techniques".
Rollomatic E guide bars
Rollomatic ES and Rollomatic ES light
guide bars
Saw chains 3/8" (9.32 mm)
Specifications
A = 300 hours
B = 125 hours
C = 50 hours
Displacement: 4.67 cu. in.
(76.5 cm
3
)
Cylinder bore: 2.05 in. (52 mm)
Stroke: 1.42 in. (36 mm)
Engine power
according to
ISO 7293:
6.0 hp (4.5 kW) at
9,800 rpm
Idle speed: 2,500 rpm
Maximum speed
with bar and chain: 13,500 rpm
Spark plug
(suppressed):
Bosch WSR 6 F,
NGK BPMR 7 A
Electrode gap: 0.02 in. (0.5 mm)
Fuel tank capacity: 27.1 fl.oz (0.8 l)
Oil tank capacity: 11.0 fl.oz (0.325 l)
MS 461: 14.8 lbs. (6.7 kg)
MS 461 with handle
and carburettor
heating: 15.0 lbs. (6.8 kg)
MS 461 with loop
handle: 15.7 lbs. (7.1 kg)
STIHL reduced kickback guide bars
(with green label)
Bar lengths: 18, 20, 25, 28 in. (45,
50, 63, 71 cm)
Pitch: 3/8" (9.32 mm)
Groove width: 0.050 in. (1.3 mm) or
0.063 in. (1.6 mm)
Sprocket nose: 10-tooth for cutting
lengths 18, 20 in. (45,
50 cm)
11-tooth for cutting
lengths 25, 28 in. (63,
71 cm)
STIHL reduced kickback guide bars
(with green label)
Bar lengths: 25, 28 in. (63, 71 cm)
Pitch: 3/8" (9.32 mm)
Groove width: 0.050 in. (1.3 mm) or
0.063 in. (1.6 mm)
Sprocket nose: 11-tooth
STIHL reduced kickback saw chain
(with green label)
Rapid Super 3 (33 RS3) Type 3624
Pitch: 3/8" (9.32 mm)
Drive link gauge: 0.050 in. (1.3 mm)
STIHL reduced kickback saw chain
(with green label)
Rapid Super 3 (36 RS3) Type 3626
Pitch: 3/8" (9.32 mm)
Drive link gauge: 0.063 in. (1.6 mm)